一种主被动激光雷达系统设计及应用  

Design and Application of an Active/Passive Lidar System

作　　者：肖韶荣 王春晖 黄星 XIAO Shaorong;WANG Chunhui;HUANG Xing(Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean,Nanjing 210044 ,China;Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology,Nanjing 210044,China;School of Physics and Optoelectronic Engineering,Nanjing University of Information Science & Technology,Nanjing 210044,China;School of Atmospheric Physics,Nanjing University of Information Science & Technology,Nanjing 210044,China)

机构地区：[1]江苏大气海洋光电探测重点实验室,南京210044 [2]江苏省大气环境与装备技术协同创新中心,南京210044 [3]南京信息工程大学物理与光电工程学院,南京210044 [4]南京信息工程大学大气物理学院,南京210044

出　　处：《现代雷达》2019年第6期8-12,共5页Modern Radar

基　　金：公益性(气象)行业专项(GYHY201206037);江苏省科技支撑计划(BE2010733)

摘　　要：为综合利用激光雷达的光学接收天线,设计了一种可工作于主动状态和被动状态的光学遥感测量系统。处于主动状态时,主振荡激光器辐射1064nm的激光脉冲,经倍频输出523nm激光,泵浦罗丹明染料,实现调谐脉冲输出,脉冲最高频率10Hz,脉冲宽度为3.0ns,染料激光器输出脉冲能量可达105mJ,主振荡输出激光脉冲可达1.08Jo处于被动状态时,利用大气透过的太阳光谱,选取2个波长的光谱线,采用比例光谱技术,根据激光雷达光学天线接收的太阳光谱强度,反演大气中反应性气体的柱浓度,再计算体积浓度。系统用于测量SO2和O3应用结果表明此系统的测量数据与国家相关测量平台数据非常吻合。In order to synthetically utilize the optical receiving antenna of lidar, an optical remote sensing measurement system which can work in active and passive states was designed. In the active state, the main oscillator laser radiates 1 064 nm laser pulse, and outputs 523 nm laser through frequency doubling, pumping Rhodamine 6g ( R6g) dye to achieve tunable pulse output. The maximum pulse frequency is 10 Hz, the pulse width is 3. 0 ns, the output pulse energy of the dye laser can reach 105 mJ, and the output laser pulse of the main oscillator can reach 1.08 J. In the passive state, the column concentration of reactive gas in the atmosphere was inverted by using the solar spectrum transmitted by the atmosphere, selecting two wavelengths of spectral lines, using proportional spectrum technology, according to the solar spectral intensity received by the optical antenna of the lidar, and then the volume concentration was calculated. The system was used to measure S02 and 03. The application results show that the measurement data of the system are in good agreement with those of the relevant national measurement platforms.

关 键 词：激光雷达 光学遥感 后向散射系数 光谱仪 大气探测 

分 类 号：TN958.93[电子电信—信号与信息处理]